4. Going down, down! Consider the figure shown in the following figure. You are lowering two boxes, one on top of the other, down a ramp by pulling on a ropeparallel to the surface of the ramp. Both blocks 18.0 kg move with constant velocity. The coefficient of kinetic friction between the ramp and the lower box is 0. 452 and the 27.0 kg 3.50 coefficient of static friction between the two boxes is 0.770. 5.75 A Draw the Free-Body diagram of both blocks. Set the x-axis parallel to the ramp. Write Newton's 2nd law along the x and y directions for both blocks. B.

4. Going down, down! Consider the figure shown in the following figure. You are lowering two boxes, one on top of the other, down a ramp by pulling on a ropeparallel to the surface of the ramp. Both blocks 18.0 kg move with constant velocity. The coefficient of kinetic friction between the ramp and the lower box is 0. 452 and the 27.0 kg 3.50 coefficient of static friction between the two boxes is 0.770. 5.75 A Draw the Free-Body diagram of both blocks. Set the x-axis parallel to the ramp. Write Newton's 2nd law along the x and y directions for both blocks. B.

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter6: Applications Of Newton's Laws

Section: Chapter Questions

Problem 112AP: A car is moving at high speed along a highway when the driver makes an emergency braking. The wheels...

See similar textbooks

Similar questions

Suppose you have a 120-kg wooden crate resting on a wood floor, with coefficient of static friction 0.500 between these wood surfaces. (a) What maximum force can you exert horizontally on the crate without moving it? (b) If you continue to exert this force once the crate starts to slip, what will its acceleration then be? The coefficient of sliding friction is known to be 0.300 for this situation.
A person doing a chin-up weighs 700 N, exclusive of the arms. During the first 25.0 cm of the lift, each arm exerts an upward force of 355 N on the torso. If the upward movement starts from rest, what is the persons velocity at that point?
Ina traction setup a broken bone, with pulleys and rope available, how might we be able to Increase the force along the tibia using the weight? (See Figure 4.30) (Note that the tibia is the shin bone shown in this image.) Figure 4.30 A leg is suspended by a traction system in which wires used to transmit forces. Frictionless pulleys crw.ge the direction of the force T without changing Its magnitude.
A student is attempting to move a 30-kg mini-fridge into her dorm room. During a moment of Inattention, the mini-fridge slides down a 35 degree incline at constant speed when she applies a force of 25 N acting up and parallel to the Incline. What is the coefficient of kinetic friction between the fridge and the surface of the incline?
What can you say about the velocity of a moving body that in dynamic equilibrium? Draw a sketch of such a body using clearly labeled arrows to represent all external forces on the body.
(a) What force causes an automobile to move? (b) A propeller-driven airplane? (c) A rowboat?
The engines in a supertanker carrying crude oil produce a net force of 20,000,000 N on the ship. If the resulting acceleration is 0. 1 m/s2, what is the ship’s mass?
(a) If the rocket sled shown in Figure 4.32 starts with only one rocket burning, what is the magnitude of its acceleration? Assume that the mass of the system is 2100 kg, the thrust T is 2.4104 N, and the force of friction opposing the motion is known to be 650 N. (b) Why is the acceleration not one-fourth of what it is with all rockets burning?
When you take off in a jet aircraft, there is a sensation of being pushed back into the seat. Explain why you move backward in the seat—is there really a force backward on you? (The same reasoning explains whiplash injuries, in which the head is apparently thrown backward.)
A baseball catcher is performing a stunt for a television commercial. He will catch a baseball (mass 145 g) dropped from a height of 60.0 m above his glove. His glove stops the ball in 0.0100 s. What is the force exerted by his glove on the ball?
A physics major is cooking breakfast when he notices that the frictional force between his steel spatula and his Teflon frying pan is only 0.200 N. Knowing the coefficient of kinetic friction between the two materials, he quickly calculates the normal force. What is it?
An object of mass m is sliding with speed v, at some instant across a level tabletop, with which its coefficient of kinetic friction is . It then moves through a distance d and comes to rest. Which of the following equations for the speed i is reasonable? (a) i = 2mgd(b) i =2mgd (c) i = 2gd(d) i = (e) i = 2gd